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is accompanied by a simultaneous decrease in innervation to its specific antagonist, such as the medial rectus and the lateral rectus in the case of an eye looking to one side of the midline. When looking outward or laterally, the lateral rectus of one eye must contract via increased innervation,
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the lower arm inward. To reach optimum efficiency, contraction of opposing muscles must be inhibited while muscles with the desired action are excited. This reciprocal innervation occurs so that the contraction of a muscle results in the simultaneous relaxation of its corresponding antagonist.
171:; a type of involuntary action of the body to remove the body part from the vicinity of an offending object by contracting the appropriate muscles (usually flexor muscles), while relaxing the extensor muscles, allowing smooth movement.
139:. Reciprocal innervation describes skeletal muscles as existing in antagonistic pairs, with contraction of one muscle producing forces opposite to those generated by contraction of the other. For example, in the human
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while its antagonist, the medial rectus of the same eye - shall relax. The converse would occur in the other eye, both eyes demonstrating the law of reciprocal innervation.
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The significance of
Descartes’ Law of Reciprocal Innervation has been additionally highlighted by recent research and applications of
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concepts, such as optimal control and quantitative models of the motor impulses sent by the brain to control eye motion.
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Model that describes the control of agonist and antagonist muscles
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A common example of reciprocal innervation, is the effect of the
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The concept of reciprocal innervation as applicable to the
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249:. Elsevier. p. 733.
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